JP2001276259A - Discharge tool for fire fighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a conventional discharge tool for fire fighting to quickly and easily discharge water in small, medium, or large quantity, by means of a switching mechanism. SOLUTION: In this discharge tool for fire fighting, a sub-nozzle is provided for a discharge nozzle, and further the flow switching mechanism is provided for the nozzles. As a result, adjustment of flow rate to small, medium, or large quantity can be implemented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire-fighting water spray used when a fire occurs.

[0002]

2. Description of the Related Art Damage caused by fire includes damage caused by combustion and fire water. In order to prevent damage from combustion, of course, various water discharge nozzles that use water sent from fire pump trucks are used, and nozzles that can perform the most effective fire fighting work according to the scale and type of fire Has been selected.

[0003] Fire water damage (hereinafter referred to as "water damage")
In particular, if a fire occurs on the upper floor of an apartment house (a multi-family house), in addition to the source of the fire,
There is fire water damage on the lower floor, and the proportion of the damage is a major problem. In this case, the fire brigade takes measures to prevent water damage on the lower floor by laying a waterproof sheet.

[0004] As a water discharge device suitable for preventing this water loss,
Fog guns are well known and used. The structure has a shape similar to a rifle, as the name implies, and the water is discharged by the switching lever while holding the handle and the gun handle. The handle is 0 degree, 45 degree, 90 degrees as shown in FIG.
The position can be changed in three stages of degrees, so that water discharge can be stopped, sprayed water discharged and rod-shaped water discharged.

[0005] In this fog gun, it is necessary to set the nozzle pressure to 1.5 MPa in order to spray and discharge fine particles having an average of 200 µm. Unless the water supply pressure from the pump car is changed, in a small-scale fire in the range of 140 L / min to 190 L / min, which is the change in water discharge amount due to the spray water discharge angle of the nozzle, at 140 L / min to 190 L / min, If the damage due to water loss is considered to be large, it is conceivable to reduce the amount of water discharged. In this case, since the fog gun cannot adjust the amount of water discharged from the main body, the firefighter responsible for water discharge (hereinafter referred to as "water discharger") is a firefighter (hereinafter referred to as "engineer") operating the pump of the fire truck. ) Had been informed that they would lower the water supply pressure. In addition, communication was carried out at the fire site using radio equipment owned by firefighters.

In the case of a large fire with a large fire scale,
Since the water outlet itself is exposed to large radiant heat,
The fire was extinguished by spraying the water and blocking the radiant heat.

[0007]

In the above case, the water discharger is rarely in a place where the engineer can be reached by voice. So, ask another fireman to contact you,
Or stop the water discharge once and contact the engineer directly. This was a major hindrance to firefighting, as there was no time left for fire fighting.

In the radio equipment of firefighters, since a plurality of firefighters gather at the same place, radio waves are complicated and transmission cannot be performed substantially quickly and reliably. Was not always valid.

Further, as a problem when the pressure of the pump is lowered, the current fog gun has a function of discharging fine particles of 200 μm near a water supply pressure of 1.5 MPa and has a function. There was a problem that the loss increased instead.

[0010] The structure of the fog gun of the water discharge device suitable for preventing water loss includes a two-way switching nozzle, a sailor nozzle, a protector nozzle, and the like. The two-way switching nozzle switches between spray water discharge and rod-shaped water discharge. It is not possible to perform two-port simultaneous water discharge, fine particle spray water discharge, flow rate adjustment, etc.

The sailor nozzle cannot adjust the flow rate only by spraying water. The protector nozzle is mounted between the tube and the nozzle, and is not for fire extinguishing, but has only a function of spraying water for self-defense.

In the case of a large fire, the water discharger discharges water in a spray state in order to block high radiant heat. In this case, the water discharge range is shorter than that of a rod-shaped water discharge. If not, effective fire fighting cannot be performed. Alternatively, it was necessary to prevent the water discharger in front from another water discharger in the rear section from assisting and injecting water, thereby preventing radiant heat and burns caused by fire.

The present invention solves the above-mentioned problems, and can quickly switch to the sub-nozzle at hand. Further, the present invention can cope with a small fire by allowing the sub-nozzle to spray and discharge water. The purpose is to obtain fire-fighting spouts.

It is a further object of the present invention to provide a fog gun water discharge device capable of adjusting the flow rate over a small flow rate, a medium flow rate, and a large flow rate, and performing self-defense spraying water discharge with a small nozzle so as to be closer to a fire source. And It is a further object of the present invention to obtain a fire-fighting water discharge device capable of performing spray water discharge using fine particles.

Further, according to the present invention, in a fog gun water discharge device capable of switching the flow of a fire extinguishing jet, a sub-nozzle for spraying and discharging a small flow rate to a water discharging nozzle is provided, and pressurized water flows into the sub-nozzle. Alternatively, a switching mechanism for closing is provided, and the switching mechanism is provided integrally with the handle.

[0016]

In order to solve the above-mentioned problems, according to the present invention, in a fire extinguishing water discharging device, a sub-nozzle is provided for a water discharging nozzle, and pressurized water flows into or from the sub-nozzle. Provided is a water discharging device provided with a switching mechanism for causing the water discharging device to perform the switching.

In the fire extinguishing water discharging device, a sub-nozzle for spraying and discharging a small amount of water to a water discharging nozzle is provided, and a switching mechanism for injecting or closing pressurized water to the sub-nozzle is provided. I will provide a.

In the fog gun water discharge device capable of switching the flow of the fire extinguishing jet, a sub-nozzle for spraying and discharging a small amount of water to the water-discharging nozzle is provided, and a switch for injecting or closing the pressurized water to the sub-nozzle is provided. The present invention provides a fog gun water discharge device provided with the above mechanism.

In a fog gun water discharge device capable of switching the flow of a fire extinguishing jet, a sub-nozzle for spraying and discharging a small flow rate to a water-discharging nozzle is provided, and a switch for injecting or closing pressurized water to the sub-nozzle is provided. Provided is a fog gun water discharge device capable of operating a switching mechanism by integrally providing a mechanism with a handle and moving the handle back and forth or rotating.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIG. 1 shows one embodiment of the present invention.

As shown in FIG. 1 (2), the fog gun has a gun barrel 4 having a barrel 1 through which water flows and a freely rotatable connection fitting 40 for connecting water from a hose (not shown). It mainly consists of a handle 3 provided in front of the barrel 1, a nozzle 7 for jetting water, and an auxiliary nozzle 8.

The interior of the barrel 1 includes a nozzle 7 and a sub-nozzle 8.
A needle valve 20 is provided for supplying pressurized water to the needle. The needle valve 20 is a member that jets or stops the pressurized water from the nozzle 7, and is moved left and right in the axial direction by the barrel 2 in the barrel 1. The movement is
The gun shaft 2 is moved rightward in the figure axial direction by pulling a lever 5 rotatably attached to the needle, and the needle valve 20 is moved rightward to eject pressure water.

The structure of the nozzle 7 in the fog gun is, as shown in FIG.
The needle valve 20 has a spiral 201 at the pointed end and a packing 2 for closing the pressurized water so as to perform straight water discharge.
02 is provided, and the packing 202 is connected to the gun shaft 2. When the gun shaft 2 moves to the right in the drawing, the opening 200 gradually starts to open, and the pressure water starts to squirt. In the state shown in FIG. 2 (2), since the opening area is small, the flow from the spiral 201 in which the spiral groove is cut turns and flows out in the form of a spray.

When the gun shaft 2 is further pulled to the right, as shown in FIG. 2 (3), the flow becomes a rod-like shape and gushes violently. The jet state of the jet can be changed.

In the embodiment of the present invention, the sub-nozzle 8 is taken out from the handle 3 and is separately provided. The sub-nozzle 8 is provided in parallel with the nozzle 7.
It is designed to blow out pressurized water. The sub-nozzle 8 has a smaller flow rate than the nozzle 7, and is effective in preventing water damage. That is, the nozzle 7
Then, when the flow rate is too large, switching to the sub nozzle 8 is performed. Since the sub-nozzle 8 is designed to have a smaller opening area than the nozzle 7, the flow rate of the sub nozzle 8 also decreases. The number of the sub nozzles 8 may be increased or decreased as necessary.

In this embodiment, there is an advantage that the handle 3 of the fog gun can be used as it is, and the water discharger can easily switch to the nozzle 7, the auxiliary nozzle 8, or both while holding the handle 3.

Various switching mechanisms for the sub-nozzle 8 are conceivable, and FIG. 3 shows a sliding type switching mechanism. In this mechanism, a switching mechanism for changing the flow is provided at a branch portion 6 connecting the handle 3 and the sub-nozzle 8, utilizing the fact that the handle 3 is usually provided in the fog gun. . The handle 3 surrounds the outside of the barrel 1 so as to be slidable, and when the handle 3 is moved forward or backward, the opening 60 opened in the barrel and the opening 80 of the sub nozzle 8 are shown in FIG. Thus, the pressure water flows into the sub-nozzle 8. In this case, the pressure water flows to the sub-nozzle 8, but at the same time, if the lever 5 is pulled to the nozzle 7 to open the nozzle 7, it is understood that the nozzle 7 can be sprayed or jetted out. Is done.
In this case, the pulling degree of the handle 3 is adjusted, and the opening 60 is adjusted.
If the entire surface does not match the opening 80 of the sub-nozzle 8 but is partially adjusted, the flow rate to the sub-nozzle 8 can be adjusted to increase or decrease. Of course, if the lever 5 is not pulled, only the ejection from the sub nozzle will occur.

In this case, the sub-nozzle 8 is provided as a spray nozzle, and if the scale of the fire is small, it can be sprayed from the sub-nozzle 8 alone at the branch portion 6. If the fire is large and the radiant heat is high, if the fire is sprayed and sprayed at the same time, the self-defense spray that protects the water discharger from the radiant heat can be performed, and fire fighting can be performed in close proximity to the fire. When the spray particle diameter of the nozzle is smaller than about 200 μm, it is commonly referred to as fine particle spraying, but in the case of blocking radiant heat, the smaller the spray particle diameter, the larger the area that blocks radiant heat, which is advantageous. May be designed in this way.

FIG. 4 shows a state of the switching by the slide. In (1) of FIG. 4, the case of only spraying is
FIG. 4B shows a flow in which the handle 3 is pulled toward the user and only the rod-shaped jet is emitted from the nozzle 7. In this slide method, the flow is switched only by moving the handle 3 integrated with the sub-nozzle 8 back and forth, so that the flow can be switched quickly at the fire site.

In the embodiment shown in FIG. 5, a slide type to rotary type switching mechanism is shown. In this case, the handle 3 rotates around the barrel 1, and the barrel 1 has an opening 6.
When the handle 3 rotates around the barrel 1 and coincides with the opening 80 of the sub nozzle 8, the pressure water flows into the sub nozzle 8. As shown in FIG. 5 (3), a situation is shown in which the handle 3 rotates around the barrel 1. In the figure, the openings 60 and 80 are aligned at an angle of 60 degrees. . FIG. 6 is an overall view of the present embodiment, and shows that the state shown in FIG. 7 is obtained by rotation.

As described above, the auxiliary nozzle 8 is of an interlocking type integrated with the handle 3 (see (1) of FIG. 8). As shown in FIG. 8B, the sub nozzle 8 is separated from the handle 3.
Can also be provided. If separated, the secondary nozzle 8
Is rotated by the sub nozzle 8 itself. In this case, there is an advantage that the other water discharger can switch the way of water discharge depending on the fire situation.

In addition, in the above example, the nozzle is the nozzle 7
Although the so-called two-nozzle system is used for the sub nozzles 8, a plurality of sub nozzles 8 can be used. FIG.
As shown in the figure, the sub nozzles 8, 8, 8 are provided so as to surround the nozzle 7. In this embodiment, the sub-nozzles 8 are arranged at intervals of 120 degrees. In addition, the sub-nozzles 8 may be further changed if necessary by changing the spray area.
Can of course be provided. Also in this case, since the auxiliary nozzle 8 is directly attached to the handle 3, the flow can be switched / changed quickly and easily. However, as shown in FIG. 9B, the handle 3 and the sub nozzle 8 can be provided even if they are separated.

Although the present invention has been described with reference to the application of the fog gun in the embodiment, it is needless to say that the present invention can be applied to other fire extinguishing nozzles. For example, even in a normal fire extinguishing nozzle, if a sub-nozzle is provided and the switching valve 9 is provided when the scale of the fire is a small fire, water damage can be prevented by using the sub-nozzle. As shown in FIG. 10, if the switching valve 9 is provided, water is simultaneously distributed to the nozzle 7 and the nozzle 7 and the sub-nozzle 8 in the case of FIG. In (2) of FIG. 10, only the sub-nozzle 8 is
In (3) of 0, water can be distributed only to the nozzle 7.
Of course, the sub nozzle 8 may be a spray nozzle. In order to enter the stop state, it is sufficient to rotate the device 90 degrees counterclockwise from the state shown in (1) of FIG.

[0034]

According to the present invention, it is possible to obtain a water discharge device that can quickly and easily switch the flow to the sub-nozzle at the scene of a fire. A fire-fighting water spray that can cope with the fire was obtained, and water damage was prevented. Further, a switching mechanism for inflow or closing of the pressurized water to the sub-nozzle is provided, and the switching mechanism is capable of discharging the nozzle alone, the sub-nozzle alone or simultaneously discharging the nozzle and the sub-nozzle. The flow rate can be adjusted over a small flow rate, a medium flow rate, and a large flow rate, and the self-defense spray water can be discharged by a small nozzle.

In the event of a large fire, the water discharger sprays water in a spray state to block high radiant heat. In this case, the water discharge range has a rod-like shape because conventionally only a single spray water discharge was possible. Because it is shorter than water discharge, effective fire extinguishing activities could not be performed because spray water was released only if it was closer to the fire source, but self-defense spraying that can perform spray water discharge by sub nozzles at the same time as rod-shaped water discharge from nozzles As a result, firefighting activities can be carried out even when away from the fire source, ensuring the safety of firefighters.

On the other hand, since the bar-shaped water discharge can be performed together with the self-defense spray, the fire can be more safely approached to the fire source and the hit rate of the water discharge to the fire source can be increased, so that more effective fire extinguishing activities can be performed. However, depending on the situation in firefighting activities, it is possible to broaden the options of water discharge work by approaching or leaving the fire source.

In a fog gun water discharge device capable of switching the flow of a jet for fire extinguishing, a sub-nozzle for spraying and discharging a small amount of water is provided, and a switching mechanism for injecting or closing pressurized water into or from the sub-nozzle is integrally provided on a handle of the fog gun. Since the switching mechanism is provided by using the handle as it is, the switching can be performed only by moving the handle.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention.

FIG. 2 shows a nozzle portion used in a fog gun according to an embodiment of the present invention.

FIG. 3 shows a switching mechanism in a sub nozzle according to the embodiment of the present invention.

FIG. 4 is a view showing a usage state of spray and rod-shaped water discharge in an embodiment of the present invention.

FIG. 5 shows a switching mechanism in a sub nozzle according to another embodiment of the present invention.

FIG. 6 is an overall view including a switching mechanism in a sub-nozzle in the embodiment.

FIG. 7 shows a view in which switching to a sub nozzle is performed by the switching mechanism in the embodiment.

FIG. 8 shows a switching mechanism in a sub-nozzle in an embodiment having another two-port nozzle according to the present invention.

FIG. 9 shows a sub-nozzle and a switching mechanism thereof in an embodiment having another four-port nozzle according to the present invention.

FIG. 10 shows a nozzle and sub-nozzle switching mechanism in another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Barrel 2 Gun shaft 3 Handle 4 Gun grip 40 Swivel fitting 5 Lever 6 Branch part 7 Nozzle 8 Sub nozzle 9 Switching valve 20 Needle valve 200 Opening 201 Spiral 202 Packing

Continuation of the front page (72) Inventor Yasutomo Hibitsu 1-13-20 Hatagaya, Shibuya-ku, Tokyo F-term in the Fire and Disaster Research Institute of Fire and Disaster Management Agency of Tokyo Fire Department 2E189 KB02 KB05 KB09 KB10 4F033 AA12 BA04 CA01 CA12 DA01 EA02 GA02 NA01

Claims (4)

[Claims] 1. A fire extinguishing water discharging device, comprising: a sub-nozzle for spraying and discharging a small amount of water to a water discharging nozzle; and a switching mechanism for injecting or closing pressurized water to the sub-nozzle. The switching mechanism is characterized in that the switching mechanism enables single nozzle, sub-nozzle alone or simultaneous nozzle and sub-nozzle water discharge. 2. A fog gun water discharge device capable of switching the flow of a fire extinguishing jet, comprising a sub-nozzle for spraying a small amount of water to a nozzle for discharging water, and injecting or closing pressurized water into the sub-nozzle. A fog gun water discharge device characterized by being provided with a switching mechanism. 3. A fog gun water discharge device capable of switching the flow of a fire extinguishing jet, comprising a sub-nozzle for spraying and discharging a small flow rate to a water discharging nozzle, and injecting or closing pressurized water to the sub-nozzle. Characterized in that the switching mechanism is provided integrally with the handle. 4. A fog gun water discharge device capable of switching the flow of a fire extinguishing jet, comprising a sub-nozzle for spraying and discharging a small flow rate to a water discharging nozzle, for injecting or closing pressurized water into the sub-nozzle. Switching mechanism is provided integrally with the handle,
A fog gun water discharge device characterized in that the switching mechanism is operated by moving a handle back and forth or rotating.